Installation Instructions Model AD-HR Air Duct Monitoring Housing INTRODUCTION The SIEMENS Model AD-HR is a sampling tube, air duct monitoring housing. When used with a compatible smoke detector, smoke and combustion products are detected for shutdown of the duct system and/or operation of supplementary equipment as provided by the system control panel. See the following chart for usage. Model Detector Relay AD-HR HFP-11 Yes For compatible control equipment, see chart on last page of this manual. TECHNICAL DATA DUCT CONDITIONS Temperature Range: 32 O F (0 O C) - 100 O F (38 O C) per UL 268/268A and CAN/ULC-S529 Altitude Range: No altitude limitations Relative Humidity Range: 0-93% (non-condensating) per UL 268-268A and CAN/ULC-S529 Air Duct Velocity Range: 300-4000 ft/min Sampling Tube Pressure Range of Differences:.006-1.07 inches of water column These air duct detectors are designed for detection and control of products of combustion in a duct system. They are not to be used for open area protection. DO NOT USE air duct detectors with Alarm Verification. Fire Safety
OPERATION LED Indicator When the SIEMENS Model AD-HR is operating, a sample of air is drawn from the duct and passed through the sampling chamber by means of the inlet sampling tube. The air sample passes through the smoke detector mounted in the duct housing and is exhausted back into the duct through the outlet sampling tube. The AD-HR contains an LED indicator (located on the smoke detector) capable of flashing either one of three distinct colors: green, yellow, or red. During each flash interval, the microprocessor based detector checks the following: for smoke in its sensing chamber that its smoke sensitivity is within the range indicated on the nameplate label that its critical smoke sensing electronics are operating. Based on the results of these checks, the LED indicator flashes as follows: Flash Color Green* Yellow Normal supervisory within rated limits. Condition operation. Smoke sensitivity Detector requires service (cleaning or repair) or is operating beyond its environmental specifications. is Flash Interval (Seconds) HFP-11 R ed Alarm. 4 N o Flashes Detector is not powered, or requires repair. - *LED can be turned off by selecting "LED Deactiviated" in the Zeus Tool. 4 4 MOUNTING THE DUCT HOUSING Location on Duct System Locate the air duct detector in the main supply duct, downstream from the filters and positioned so as to operate reliably in case of smoke in any part of the air stream. In instances where filters are capable of removing smoke, install detectors both upstream and downstream from the filters. The air duct detectors use sampling tubes which monitor the full width of an air duct to overcome the limitations of spottype smoke and heat detectors in the duct. However, since Fire Safety 2
OUTLET SAMPLING TUBE INLET SAMPLING TUBE AT LEAST SIX DUCT WIDTHS stratification can occur in the air stream after a long duct run, locate the detector after bends or inlets which create turbulence, and hence, a more homogeneous mixture of air. The detector should, when possible, be located a minimum of six duct-widths downstream from the source of the turbulence (See Figure 1). A 12 inch by 12 inch access hole should be cut in the duct adjacent to the detector to permit checking and cleaning of the sampling tubes, if necessary. Figure 1 Typical Mounting Of Duct Housing Locate the air duct detector in the air handling system, as shown in Figure 2 and in conformance with NFPA 90A, Air Conditioning and Ventilating Systems and with NFPA 72, National Fire Alarm Code. (Both publications are available from the National Fire Protection Association, Batterymarch Park, Quincy, Massachusetts.) The detector on the return air side of the blower should be located at a point prior to exhausting air from the building or diluting return air with outside air. The detector on the supply air side of the blower should be downstream of the blower. TYPE A: CLOSED SYSTEM - NO EXHAUST RETURN D SMOKE DETECTOR FRESH INTAKE PLENUM FILTER BLOWER D SUPPLY SMOKE DETECTOR TYPE B: PROVISION FOR EXHAUSTING SOME PERCENTAGE OF RETURN EXHAUST OUTPUT RETURN D SMOKE DETECTOR FRESH INTAKE PLENUM FILTER BLOWER D SUPPLY SMOKE DETECTOR TYPE C: RETURN UNDER POSITIVE PRESSURE FROM SEPARATE BLOWER RETURN RETURN BLOWER FRESH INTAKE EXHAUST OUTPUT FILTER SMOKE DETECTOR PLENUM Figure 2 Recommended Locations In Duct Systems D BLOWER D SUPPLY SMOKE DETECTOR Fire Safety 3
ITEM No. 1 2 3 4 5 6 Figure 3 Exploded View ITEM No. ITEM No. COMPONENT COMPONENT COMPONENT (2) Sampling Tube Gasket (1) Housing (1) Inlet Sampling Tube (1) Outlet Sampling Tube (1) Template (2) Screw, No. 10-1 1/2 7 8 9 10 11 12 (2) Screw, No. 10-1 (2) Lockwasher (1) Rubber Stopper (3) Bracket (3) Screw, 3/16 (3) Screw, 8/32 11 12 10 13 14 15 16 17 18 19 16 4 (1) Plug (1) Detector PE-11 (1) Detector FP-11 or HFP-11 (1) Cover Gasket (1) Detector Cover (8) Screw, No. 6 (1) DB-ADPT Base Adapter 5 18 17 6 1 14 or 15 19 12 10 11 12 2 13 11 10 UP 7 8 3 9 Fire Safety 4
Wire or program the detectors into the system so that they automatically shut down the blowers and operate dampers as required in the event of an alarm. Mounting of the Air Duct Housing (See Figure 3) Affix the adhesive backed gaskets (Item 1) to the back of the detector housing (2) so that the larger hole on the gasket lines up with the sampling tube hole on the sampling chamber and the smaller hole lines up with the housing mounting hole. Affix the adhesive backed template (5) to the side of the ductwork. Drill the four 0.110 diameter holes with a No. 35 drill bit and cut or punch out two 7 /8-inch diameter holes as indicated on the template. Attach the appropriate model housing to the air duct using two No. 10 1 1 /2 inch screws (6) and also using two No. 10 1-inch screws (7) with lockwashers (8). Cut a 12 inch by 12 inch access hole in the duct adjacent to the housing to permit checking and cleaning of the sampling tubes. The access hole must be covered and sealed when not in use. Sampling Tube There are four standard lengths of inlet sampling tubes. To Selection ensure accurate air sampling, select the appropriate length and determine the outside width of the duct. Select the sampling tube nearest to, but greater than, the duct width. The outlet sampling tube for all ducts is a fixed length of 4 inches (10.1 cm). Trim the inlet sampling tube at the job site as described in the following table. Outside Duct Width Sampling Tube Standard Tube Model No. Length 1 ft 9 3 /4 in or less STA-2 2 ft 1 ft 9 3 /4 in - 3 ft 3 3 /4 in STA-3 3 ft 6 in 3 ft 3 3 /4 in - 6 ft 3 3 /4 in or less STA-6 6 ft 6 in 6 ft 3 3 /4 in - 9 ft 9 3 /4 in or less STA-10 10 ft Greater than 9 ft 9 3 /4 in Consult factory Fire Safety 5
FLOW SCARFED END OF OUTLET SAMPLING TUBE FACES DOWNSTREAM OUTLET FLOW INLET SAMPLING TUBE HOLES FACE INTO STREAM FLOW INLET FLOW FLOW Figure 4 Sampling Tube Orientation Each model is manufactured with a different number and size of sampling holes. Only the specific tube must be used for the specified duct width. Trimming the Inlet Sampling Tube (See Figure 4) Measure the outside width of the duct. Add 2.25 inches to obtain proper length of tube. Example: Outside width of duct 2 ft 6 in Add 2.25 inches + 2.25 in Length of sampling tube 2 ft 8.25 in The length (2 ft 8.25 in) determines the model number of the appropriate sampling tube (STA-3). Measure the sampling tube, starting from the end with the four mounting holes. Trim tube to the correct length, remove all burrs, and insert a rubber stopper (Figure 3, Item 9) in the tube. Installation of the Sampling Tubes Before installing the tubes, cut a 7 /8-inch hole in the duct wall that is directly opposite the inlet sampling chamber hole in the detector housing. This will allow the inlet tube to protrude through the duct. Fire Safety 6
Attach brackets (10) to the inlet and outlet air sampling tubes with 3 /16 screws (11). Install the inlet tube (3) by inserting it through the air sampling chamber as shown in Figure 3. Face sampling tube holes into the air stream (Figure 4), and secure to the housing with 8 /32 screws (12). When attaching brackets, be sure to align tubes properly (See Figure 4). Install the outlet tube (4) by inserting it into the upper socket of the air sampling chamber with the scarfed end facing downstream (See Figure 4). Secure the bracket to the housing with an 8 /32 screw. Make sure no sampling holes extend beyond the ductway, that the stopper (9) remains firmly in position, and that the duct hole is sealed around the protruding sampling tube. Air Duct Sampling Tube Pressure Measurement The SIEMENS Model PDM-3 Pressure Differential Measuring device should be used to ensure that the sampling tube pressure differential is within the specified limits (See Technical Data on page 1). Qualified personnel should take measurements in accordance with the PDM-3 Instructions, P/N 315-085535. WIRING The AD-HR should be connected as shown in Figure 5 and wired to the DLC (refer to DLC Installation Instructions, P/N 315-033090.) Note any limitations on the number of detectors and restrictions on the use of remote devices permitted for each circuit. All optional accessories in the same loop MUST be compatible system accessories. HFP-11 is a polarity insensitive detector. Line 1 and Line 2 can be either line of the loop. When replacing a detector with a different model, be aware that existing detector accessories connected to the base or air duct housing that were compatible with the old detector may not be compatible with the new detector. Always read the Installation Instructions accompanying the detector to determine detector and accessory compatibility. Fire Safety 7
NOTES: 1. The relay contacts are shown after a reset pulse, which represents the non-alarm condition. 2. If the relay contacts are being used to control 120 VAC operated equipment, ensure that the conduit is properly attached to the internal metal ground strap, using the proper conduit locking nuts. Failure to provide proper grounding may result in fatal electrical shock and violation of national and local codes. 3. Refer to the AD-11P Installation Instructions, P/N 315-095659. 4. Refer to the RL-HW / RL-HC Installation Instructions, P/N 315-033230. MODEL AD-11P (SEE NOTE 3) MODEL AD-HR WITH DA-HR RELAY MODULE MODEL AD-HR WITH DA-HR RELAY MODULE HFP-11 HFP-11 HFP-11 4 3 2 1 5 5 6 7 8 9 10 11 5 5 6 7 8 9 10 11 NOT USED TERMINAL BLOCK RED TB 1 TB 2 TB 3 OPTIONAL REMOTE ALARM INDICATOR MODEL RL-HW OR RL-HC (SEE NOTE 4) RELAY BOARD ALARM CONTACTS 125 VAC/24 VDC, 3A SEE NOTES 1 AND 2 ALARM CONTACTS 125 VAC/24 VDC, 3A SEE NOTES 1 AND 2 LINE 1 NOT USED NOT USED LINE 2 WIRE NUT REQUIRED TO NEXT ADDRESSABLE DEVICE ZONE WIRES SEE COMPATIBLE CONTROL EQUIPMENT TABLE Figure 5 Typical Connections For The AD-HR Installation Of Smoke Detectors Installation of the DB-ADPT Base Adapter SIEMENS Model AD-HR Air Duct Detector is designed only for use with the HFP-11 detector with the DB-ADPT base adapter. Install the DB-ADPT adapter into the DB-3S base. Align the notch in the outer flange of the adapter to the raised surface on the outer ring of the base (Refer to Figure 8). Push the adapter into the base and rotate clockwise to engage the electrical connections. The adapter will automatically stop and lock into place. Fire Safety 8
Installation/Removal of Series 11 Detector in Base Adapter R NOTCH EM OVE BASE TWIST RAISED SURFACE INSTALL To Install: Align detector with base and insert detector. Rotate detector counterclockwise while gently pressing on it until the detector drops fully into base. Then rotate the detector clockwise until it stops and locks in place. Insert optional locking screw (Order SIEMENS Model LK-11). To Remove: Rotate the detector counterclockwise until stop is reached. Pull detector out of base. Figure 6 Sensing Compartment Cover Installation Installing The DB-ADPT To Install the cover gasket (Figure 3, Item 16) on The DB-3S Base the housing, if not already installed. Be certain the alignment holes in the cover gasket are aligned with the guides on the housing. Install the sensing compartment cover (17). Fasten the cover, using the No. 6 screws (18) provided. Tighten snugly, but not so tightly as to warp the cover and cause air leakage around the edges of the cover. TESTING Sensitivity Test Only qualified service personnel should test. To assure proper operation of the detector and control panel, both the Sensitivity and the Functional tests should be conducted. The minimum test schedule may be found in the current edition of NFPA 72 for installations in the U.S. and CAN/ULC-S537, The verification Of Fire Alarm Systems, for installations in Canada. Perform a Sensitivity test by measuring the obscuration level of the detector using the control panel or DPU. This test is used to ensure the detector is within its listed and marked sensitivity range. Refer to thefirefinder-xls Manual, P/N 315-033744, or DPU Manual, P/N 315-033260, for additional instructions on applying the Sensitivities mode. Fire Safety 9
STEP 1 Press the Menu button on the PMI (upper right) and select the Report option by pressing the button with the lit green triangle pointing to the Report Tab. STEP 2 Press the More Info button on the PMI to navigate to the desired loop or specific device as follows: Press the More Info button once to display a list of FireFinder-XLS nodes; use the up and down buttons to select the desired node. Press the More Info button again to display a list of FireFinder-XLS modules; use the up and down buttons to select the desired module. Press the More Info button again to display a list of FireFinder-XLS devices; use the up and down buttons to select the desired device. STEP 3 Once at the desired module/loop or device, select the Status option by pressing the button with the lit green triangle pointing to the Status Tab. The screen displays several options which can be selected using the Touch Screen. STEP 4 STEP 5 Touch the box labelled Sensitivities. This will highlight the box (reverse video) to indicate that it has been selected. Select the Execute option by pressing the button with the lit green triangle pointing to the Execute Tab. The system reads all device sensitivities for the module/loop or device and displays it on the PMI screen. This sensitivity report can then be printed by selecting the Print option. Functional Test Perform a Functional (Go, No-Go) test by activating the detector introducing smoke or SIEMENS Test Gas, P/N 315-282747, directly into the inlet sampling tube after removing the sealing plug on the opposite side of the duct. This test is simply used to ensure that smoke can enter the sensing chamber and alarm the control panel when the detector reaches the programmed obscuration (concentration) level. Fire Safety 10
Refer to the FireFinder-XLS Manual, P/N 315-033744, for additional information. Follow the steps below to disable ASD for testing: STEP 1 STEP 2 Press the Menu button on the PMI (upper right) and select the Maintenance (Maint) option by pressing the button with the lit green triangle pointing to the Maint Tab. Press the More Info button on the PMI to navigate to the desired loop or specific device as follows: Press the More Info button once to display a list of FireFinder-XLS nodes; use the up and down buttons to select the desired node. Press the More Info button again to display a list of FireFinder-XLS modules; use the up and down buttons to select the desired module. Press the More Info button again to display a list of FireFinder-XLS devices; use the up and down buttons to select the desired device. STEP 3 STEP 4 STEP 5 STEP 6 Once at the desired module/loop or device, select the Control option by pressing the button with the lit green triangle pointing to the Control Tab. The screen displays several options which can be selected using the Touch Screen. If not already logged in, the used is prompted for a password. Enter the password as configured in the Zeus tool using the touch screen. Once the password is entered correctly, allow the panel to validate it by pressing the button with the lit green triangle pointing to the Done tab. Touch the box labelled Disable ASD, or Enable ASD if that is the desired operation. The PMI presents a confirmation screen listing the operation requested and its scope. Complete the operation by pressing the button with the lit green triangle pointing to the Execute tab. Fire Safety 11
The HFP-11/HFPT-11 detectors can also be tested individually using the DPU. Refer to the DPU Manual, P/N 315-033260. MAINTENANCE The performance of the air duct detector unit may be adversely affected by dirt or foreign matter on the sampling tubes or detector. If the air holes in the inlet sampling tube become restricted, the unit cannot receive a proper air sample, and performance is impaired. It is recommended that the sampling tubes be checked and cleaned periodically. The detector maintenance program should consist of periodic cleaning of dust from the detector head by using a vacuum cleaner. For cleaning HFP-11 detectors, refer to the HFP-11 Installation Instructions, P/N 315-033290. The cleaning and test program is recommended for 6 month intervals, or more frequently, if needed, depending on the individual detector environment. Under no circumstances is the detector portion of the unit to be disassembled by anyone other than an authorized, Inc. Systems Technician. For service, contact your nearest authorized Siemens Building Technologies, Inc. Service Representative. If the fire alarm system is connected to a central station or fire department, or has external devices such as fans, extinguishers, etc., connected, notify appropriate personnel and disconnect the external devices until all tests are completed. After testing, reset the system, reconnect the devices, and notify the personnel that the system is operating again. AD-HR USING HFP-11 DETECTOR Equipment Compatibility Installation/Wiring Identifier Instructions DLC (FireFinder-XLS) P/N 315-033090 The detector model number is the compatibility identifier., Inc. 8 Fernwood Road Florham Park, New Jersey 07932, Ltd. 2 Kenview Boulevard Brampton, Ontario Canada L6T 5E4